Window screen



- Aug. 10 192a.

J. B. KAUFMANN IIINDQW SCBEEN Filed May 13, 1925 Patented Aug 10, 1926.

. UNIT ED STATES PA JSEIEH B.-KAUFMANN OF MOUND RIDGE, KANSA S VINDOW SCBEEN.

Application fl1ed 13, 1925. Seris.l N0. 80,022.

This invention relates t0 losures broadly, but has particular reference to a window screen, 01' ;1 screen door which types of closures are used in Warm weather.

The improvement is directed more particu.larly to what may be termed a fly escape, that is a clevice which is provided to allow flies to escupe from the room, und 130 obvlate the necessity' of employing fly trap's, fly 'paper, ancl the like.

' It has been observed that when a. fly has obtuineda full meal, he flieg to the winclow 01 (1001 in an attempt; to escape. The provision 0f a screen, or screen d001 t0 prevent the entrance also operates t0 prevent such escape. l have therefore evolved a'ml produced a n0vel screen Which Will allow flies to escape from the room and will at' the same time practyiqally eliminate the entrance of an appreciabl e number 0f flies from the out side. l.

The partic1llar improved construction for obtaining this -result will become apparen t fr0m the following detailed description and the accompanyin drawing.

In the accompanying drawing forming a part of this application, and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a fragmentary outside view of the upper port-ion of a window screen equipped with the improved escapes.

Figure 2 is an enlarged detail sectional view showing the construotion more plainly.

F igure 3 is a section taken approxnnately upon the plane of the line 33 0f Figure 2.

Figure 4 is a view like Figure 3 Show ing a slightly different embodiment of the invention.

Referring to the drawingn in detail, the reference character 1 designates one bar0f a window soreen, screen door, or' the like, which in Order to adapt it for the invention, is provided with a recess openin through the outer und bottom faces, an forming what may be designated as a pocket 2. From Figure 2 it will be noted that this pocket flares downwardly t0 the entrance of the flies. Cooperating with this pocket is a, substantially U-shapecl o1 channel shapd member which is fitted onto the bar- 1 from the outside. The top flange 3 (See Figure 3) thus contacts the t0p of the bar, the bottom flan 4 contacts the bottom of thebar, and the lntermediate portion 5 bears against the .0uter face of thg, .bai' and closs the cotresppnding face of said pocket. In this counect1on it should be noted that the pocket in addition t( being flared down-wardly has its inner Wall 6 (Figure 3) curved outwardl y and leading t0 a restricted escape hole 7 111 the plate 5. Moreover, the flange 4 is provided with an elongatiadentrance opening 8 registering With the entrance 130 said pocket. The flanges 3 and 4= may be sei; into appropriate recesses formed in the bar 1 to render them flushWith the surfaces of the bar, 01 thizy may be' allowed leo project as shown, for the thickness of the meta] will hardly interfere with the eil'ectiveness of the device.

As before intimated, the invent'ion is just as well applicabl to a window as it is to' a sc1 een door, or 'other similarclosure. In

Figure 4 I have shown the devica revised to accommodate a common glass wmdow.

is indicated by the referencecharactr 9,

the outer plate by the characlii 10, und the flange 12 hoWever 1s bent as ab 13 to provide an a11gular groove for reception of the window pane 14. The entrance to the pocket-l5 in th1s instance is formed in the flange 12 and is restricted slightly by the presence of the'angular band 13. From the foregoing description und dravi ng, it will .be seen at I have evol ved und In this fig ure the bar of the window f rame prpduced a novel d evice which may be as so ilated with conventional window screens windows, doors, and the like in a, manner to per'mit escape o'f flies from the interiot'of the room- The device is such that it aids in the escape'in that the pocket is formed in the top or side bars, und a shaftjof' light coming through the restricted escape hole tends to render the pocket readily visible,

and to attracl: the flies so that their escape will not be hindered. While the flies am permitted to escape rapidly, l:he restricte escape hole provided, serves to reduce the adrnittance of flies 130 a minimum. 1 Not only this, the device is such that its use is not rendered objectionable in rain weather, becausevery little 0r no min wil enter theret-hrough. These and other fea bares and advantages of the invention have ben made apparent fromm the descriptioh and drawing.

While 1e preferredembodiments of the invention have bean shown and desurlbed, it

is tq be underst-ood thuL changes coming w;th1n the field of invention nw. y be resorted to if desired.

ters Patent is 1. As a nqw article uf manufacture, a fly 2. The combination With a Emma adapted ior use in u window 01' d001 openingand having a top bar with a recess in tl\e unde11- side and uuter side thereof, of a, channel shaped member straotdling the said bar und arranged over said. recess und having an intermediate upright portion with uh aparture in c01nmunication with the upper portion of the recess and also having uppc-r aud lower flanges, the lower flunge provided with um uperture in comnmnication with said recess at the 10 wer end thcreot, said aperture -\L the inner side of u bar uur ried by the frzune.

111 testimony whereof 1 airix my signuture.

JOSEPH B. KAUFMANN. 

